Safety apparatus



Aug. 30, 1932. s. H. LOPEZ SAFETY APPARATUS Filed March 10, 1931 Sqduadari Lopez Patented Aug. 30, 1932 SALVADOR HERREJON LoPEzoF MEXICO CITY, MEXICO SAFETY APPARATUS Application filed March 10, 1931, seriai'no. 521,615, and in Mexico March .12, 1930.

This invention relates to a safety apparatus designed primarily foruse in connectionwith steam generators or boilers, but it is :to be understood that an apparatus in accordance with this invention maybe used in any-connection for which itmay be found applioa-j ble, and the inventionhas for itsobject to provide, in a manneras hereinafter set forth, a weight operable apparatus for automatically controlling the passage ofsteam pressure from a generator or boiler whensomething is abnormal in the working of the lat ter, such as low water for thepurpose of shutting off the supply of fuel to the boiler or generator,=to discontinue theoperation of the latter, for extinguishing the fire in-the firebox or for sounding an alarmto direct attention to the, abnormal working.

Further'objectsof the invention'are toprovide, in 'a manner as hereinafter set forth,

an apparatus for controlling steam pressure for the purpose referred to and which is sim ple in its construction and arrangement, 2 strong, durable, compact, thoroughly efficient in its use,readily installed with respect to the Water space of the generator or boiler, and comparatively inexpensive to set up. r

With the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter, more specifically described, and illustrated in the accompanying drawing, wherein is shown anembodiment of I the invention, but it is to be understood that changes, variations and modifications can be resorted to which fall within the scopevof the claims hereunto appended. f

In the drawing wherein like reference.

-1 characters denote corresponding parts throughout the several viewsp Figure 1 is a fragmentary view of'a steam boiler or generator showing the adaptation therewith of a'safety apparatus in accords ance with this invention and with the" appa ratus illustrated partly in vertical section, partly in elevation and further broken away.

1 Figure 2 is a section on line A-A Fig. ure 1. j, a The apparatus includes a water receiver. which is vertically disposed and comprisesfa ranged inwardly with respect to the body threaded The head 3 centrally thereof is cylindrical body portion 1, an upper head 2 and a lower head 3; The heads 2, 3 are, of square contour and formed with rounded corners. The diameter of the body portion 1 is less than the width and'breadth of the heads 2, 3. The bodyportion 1 is disposed concentrically with respect to theheads" 2, 3. The heads 2, 3 are grooved on their opposed faces as at 4. The grooves align with each other and have 'packings 5seated therein. The ends of body portionl extendinto the grooves 4; andagainst the"packings 5 whereby a seal tight joint is provided. The heads 2, 3 have extending therethrough tie bars 6"and which carry clamping nuts 7 whereby body portionl and headsf 2, are clamped together. p h

The head'2'is formed with openings-8, 9, 10 11 and'12. l The openings are-ar portion 1. The openings 9 and 11 are of p greater 'diameterthan the other of said openings and each has a portion of its wall formed with an opening13 having its wall 7 threaded. Threadedly engaging with the wall ofthe opening 9 is a steam pressure conductingline 14. Threadedly engaging with the wall of the opening 11 is a water supply line 15 opening into the chamber 16 provided by the containeix Theline 14 is adapted to open or communicate with chamberlfiand is normallyclosed-to the latter. i

Extending through the opening 8 isthe reduced portion 17 of. a hanger 18 depending into chamberlfi. A nut 19 is carriedon the outer end of the portion 17 f0r thepurpose of clamping hanger -18'to head 2. The lower I end of hanger 18 is bifurcated as at 20. "EX- tending through the opening 10 "is the reduced portion 21 ofa hanger 22swhich de- I pends in the chamber 16 and is of materially greater length than hanger 18. A nut 23 is carried on the porti0n'21 of hanger22 for ,v the purpose of clamping it to head 2. The lower portion of hanger 22 isbifurcated as at 24. Extending through'the opening12 is the reducedlportion 25 ofa hanger 26which' depends in 'chamber 16. A nut27 iscarried by portion 25 of hanger 26 for the purpose of 109 i clamping the latter to head 2. The lower end of hanger 26 is bifurcated as at 28. A valve guide and seat forming member 29 is secured ing on head 2 is a vertically shiftable water receptacle 32 having its bottomfig spaced above seat 3 and from opening 13. The top of receptacle 32 is provided wth water inlets '34and an enlarged opening35.

Pivoted as at 36 to the bifurcated end of 7 hanger 18 is a beam 37 having pivotally connected therewith as at 88 valve 39, arranged 'inithe member 29*for closing the line 14 to the chamber 16. The beam 87 extends through the bifurcated lower end of member 29. and the hanger 22 andhas its lowering movement limited by a. stop40 carried by the bifurcated lower end of hanger 22. Pivotally connectedas at '41 to the bifurcated lower en d of hanger 22' and below stop 40 is a lever" arm 42. Arranged within the chamber 16 is a pair of spaced, opposed vertical 'links'43 connected together by cross pieces 44.

I The beam 37 extends between 'and is piv otally connected to the links 43 as at 45. The arm 42 extends between and is pivotally con nected to the links 4321s at 46. Extending through the-lower ends of the links 43 isa lever arm 47 which is pivotally'connected to V the links as at 48." The'arm 47 extends into "way coupling 59. Leading from one of the le s of the cou lm 59, 1s a 1 e branch V the bifurcated lower end. of the hanger 26 and is pivotally connected therewith as at Extending through :the opening 35 and into the water in'the receptacle 82 is a balance'50 having its upper end formed with a bifurcated. lug 51 to which is pivoted, as at 52 the lever arm 42. The top of the receptacle 32, has a bifurcated lug 53 to which is pivotally connected, as "at 54 the lever arm47. i

The steam boiler or" generator isindicated at 55 and opening into the water space thereof is, a pipe 56' carrying on its outer end a lT-coupling 57 having one of its legs connected to and opening into the line 15. Attached to another leg of thecoupling 57 is a pipe branch 58 "which opens into a four.-

which is connected to the wall of and communicateswith the opening13. 'The pipe branch 58 is connected to another of thealegs of the coupling 59'and the remaining legs} of the coupling 59 are'closedby removable plugs61.. Y. r x

head 2 to provide a seal again overcomes the weight of the receptacle 32, when thisreceptacle is displaced by the water in the chamber 16, on account of having been filled with the water'fmomentarily,

' same boiler. The action of the weight 50 this chamber 16, because the rise ofthe wa- I ter level in the boiler, in condition to cover the aperture by which the chamber 16 communicates with the boiler; 7' W Vith the aforesaid it is clearly seen that the weight '50 is constantly exercising an effort to maintain closed the valve 39, and that thiseffort is effective when thereceptacle 32 is displaced; it being counteracted" or nullified the same effort when the receptacle 32 is Without displacement.- When the line 14 is open steam press'ur'efwill befsupplied to sound the alarm to indicate the boiler or generator 'is[abnorm'al' as well as for the purpose of shutting off the supthat ply, of fuel tothe boileror generatoiaand. w for discontinuing the "operation offtheflatr, 1 ter by extinguishing the fire in the firebox."

chamber 16 and from the latter to the Wa-;

ter space. The pipe"56 provides for conducting water and steam from the boiler to chamber 16.' f i I The receiver is filled with water from the" water space of the boiler when the latter is normal; The balance 50 coacts with the receptacle to maintain the valve closed'w'hen the boiler is normal. *l/Vhen the boiler nab: normal, the water receding from chamber 16 will cause the lowering of receptacle 32 and cause the oper'ation'of the valve shifting mechanism in *a direction" to open the valve." .What I claim is 1. In a safety; apparatusfor steam boil-j 'water conducting means leading fromfthe water. space of the boilerto said bottom intake for supplying'water to the receiver at the bottom of thelatter, a water conduct ring line leading from said means to the top ret eat intake, a valve controlled steam pressure outlet at the'top of the receiver, a valve for normally closing said outlet when the boiler is normal, a weight controlled mechanism at its top and a water intake at its bottom,

water conducting means leading from the water space of the boiler to said bottom intake for supplying water to the receiver at the bottom of the latter,-a water conducting line leading from said means to the top intake, a valve controlled steam pressure outlet at the top of the receiver, a valve for normally closing said outlet when the boiler is normal, a weight controlled mechanism for shifting said valve to open position when the boiler is abnormal and normally retained in inactive position by the water in the receiver when the boiler is normal, and a vertically movable perforated top water containing re-' ceptacle within the receiver and pivotally connected to said mechanism for controlling the operation of the latter, said mechanism including a balance slidably extending into said receptacle and a pivoted beam carrying said valve. I

3. In a safety apparatus for steam boilers, a water receiver having a water intake at its top and a water intake at its bottom, water conducting means leading from the water space of the boiler to said bottom intake for supplying water to the receiver at the bot tom of the latter, a water conducting line leading from said means to the top intake, a valve controlled steam pressure outlet at the top of the receiver, a valve for normally closing said outlet when the boiler is normal, a weight controlled mechanism for shifting said valve to open position when the boiler is abnormal and normally retained in inactive position by the water in the receiver when the boiler is normal, and a vertically movable perforated top water containing receptacle within the receiver and pivotally connected to said mechanism for controlling the operation of the latter, said mechanism being suspended from the top of the receiver and carrying said valve.

4;. In a safety apparatus for steam boilers, a water receiver having a water intake at its top and a water intake at its bottom, water conducting means leading from the water space of the boiler to said bottom intake for supplying water to the receiver at the bottom of the latter, a waterconducting line L leading from said meansto thetopintake,

a valve controlled"rsteam-pressure outlet-at the top iof'the receiver, a valve =fornormally closing said outletwhenitheiboiler is normal,

a weight'controlled' mechanism for shifting said valve 'to'open position whenthe boiler is abnormal and normally iretained in inac tive position by the water innthe receiver whenithe boiler is normal;a verticallymov able perforated-top water containing receptacle within the receiver and pivotally connected to saidl'mechanism' for controlling the operation of the latter, 1 said mechanism in cludinga balance slidablyiextending' into said receptacle and a pivotedibeamcarryin'g said valve, andlsaid mechanism being suspended from the top-of the' receiver 5 In a safety apparatus for steam l'boilers,

a water receiver havingawat'er intake at its 3,

top' and a water intake at its bottom, water conducting means leading from the water space of the boiler to said bottom intake for supplying water to the'receiver at therbot tom of the latter, a .water conducting line leading from said means to the-top intak ega l valve controlled steam pressure" outlet atthe top of the receiver, avalve for normally closing'saidoutlet when .the .lboiler-is'normal, a

weight controlled mechanism for shifting said valve to open position when the boiler is abnormal and normally retained in inac tive position by the water in the receiver when the boiler is normal, a vertically movable perforated top water containing receptacle within the receiver and pivotally connected'to said mechanism for controlling the operation of the latter, and said receptacle capable of seating on the bottom of the receiver and having its bottom arranged over and spaced from said bottom intake.

6. In a safety apparatus for steam boilers, a receiver having a steam pressure outlet, a permanently open means for conducting water to said receiver at the bottom of the latter when the boiler is normal and for returning water to the boiler and conducting steam from the latter to the receiver when the boiler is abnormal, a conducting line extending from said means for conducting water from the latter to the top of the receiver when the boiler is normal and for con- 1115, ducting steam to the receiver when the boiler in and communicating with the latter, a valve shifting mechanism pivotally connected to said receptacle and including a balance slidably extending into the latter, said mechanism acting to close the valve on the upward movement of the receptacleand to open the valve on the lowering of the latter.

7. In a safety apparatus for steam boilers, a receiver having a steam pressure outlet, at

ceiver when the boiler is normal and for con- 7 ducting steam to the receiver when the boiler permanently open I means "for conducting water to said receiver at the bottom of the latter when the boiler is normal and for returning water to the boiler and conducting steam from the latter to the receiver when the boiler is abnormal, a conducting line extending from said means for conducting water from the latter to the top of the reis abnormal, a valve for Closing said outlet when the boiler is, normal, a vertically movable water containing receptacle having its movement controlled by the rise and fall of the water in the receiver and arranged within and communicating with the latter, a valve shifting mechanism pivotally connected to said receptacle and including a balance slidably extending into the latter, said mechanism acting to close the valve on the upward movement of the receptacle and to open the valve on the lowering of the latter, and means for suspending said mechanism from the top of the receiver. 1

In testimony whereof, I afiixmy signature hereto.

' f SALVADOR HEBREJON LOPEZ; 

